First, I've got to say how impressed I am with the friendly and helpful advice I've received here from so many. Thank you. I only wish I'd been smart enough to post my query before I had already obligated myself to an online sailmaker (Direct Sails). That said, my purchase from them may turn out just fine...I believe they are trying hard to work with me and my concerns on this, so I do not want to malign them. They've presented an initial design based on measurements I provided of the features of the boat, which, except for a CDI FF2 furler are all original. My response was to overlay the drawing they provided on the Hunter 260 profile I uploaded here previously. I realize that might not be an appropriate assessment because I do not know if the Hunter profile diagram is strictly accurate. Furthermore, I simply matched the luff lengths to scale one figure to the other, so if those are different it would introduce error. Nevertheless, I figured it should be close. I've posted the overlay here in case anyone's curious (note that in the colored sail-design figure the head of the sail contacted the mast, which isn't the case on the Hunter, so the mast in that figure tilts slightly forward to align the luffs in the figures). The result is that the clews do not align very well. I've pointed that out to Direct Sails, and I'm still waiting to hear back, but in the meantime I posted the original query here thinking an original sail pattern would be helpful. Caverun's measurements and the Direct Sails design measurements are pretty close except for the leech, which I suspect supports my concern about the clew location:
Caverun Direct Sails Design
Luff 27’ 2” 27' 8"
Foot 10’ 5” 10' 8"
Leech 24’ 0" 25' 5"
My original post said that my boat came without a jib. Actually, it had one (not original equipment), but it's such a poor fit I can barely use it. The clew lies so low I can get virtually no tension on the leech with the jib sheet through the single, mobile block. The boat points into the wind better without the jib than with it. Hence my determination to get the clew right.
Thanks again for everyone's interest in my problem! If this is as bad as my problems get, I'm a lucky man.